Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. Determining device for determining a transmission parameter of a wireless energy transmission from a sending device to a receiving apparatus, the determining device comprising: an authorization checking device which is configured to carry out an authorization in order to determine whether the receiving apparatus is authorized to receive energy from the sending device; a sending/receiving apparatus which is configured to send and receive messages during a message exchange with the receiving apparatus in order to determine the transmission parameter; and a parameter determining device which is configured to determine the transmission parameter based on the authorization and based on the message exchange, if the receiving apparatus is authorized to receive energy from the sending device, wherein based on the transmission of a test message between the receiving apparatus and the sending device, pulse responses of the transmission channels between the sending device and the receiving apparatus are determined.
A system determines the best way to wirelessly transmit power from a sending device (transmitter) to a receiving device (receiver). It verifies that the receiver is authorized to receive power. The system exchanges messages between the transmitter and receiver to figure out the ideal transmission parameters. If authorized, it calculates the transmission parameters based on the authorization status and the message exchange. A key part involves sending a test signal between the devices and measuring the pulse responses of the wireless channels to understand the channel characteristics.
2. The determining device according to claim 1 , further comprising: a selection device being configured to select the test message.
The wireless power transmission system described previously includes a way to choose the test signal used for channel measurement. This "selection device" allows the system to tailor the test signal.
3. The determining device according to claim 2 , wherein the test message is selected individually for the receiving apparatus.
Expanding on the prior description, the test signal chosen by the "selection device" is unique to each receiving device. This allows the system to optimize channel measurement individually for each receiver.
4. The determining device according to claim 1 , wherein the transmission parameter indicates a property of an energy signal via which the energy is transmitted from the sending device to the receiving apparatus.
In the described wireless power transmission system, the "transmission parameter" represents a characteristic of the power signal itself, such as frequency or modulation, that determines how the energy is transferred from the transmitter to the receiver.
5. The determining device according to claim 1 , wherein the parameter determining device is configured to determine the transmission parameter such that the energy signal fulfills a predetermined optimum criterion.
Continuing with the wireless power transmission system, the parameter determining component chooses the transmission parameter to maximize some pre-defined performance metric. This aims to optimize the power transfer.
6. The determining device according to claim 5 , wherein the optimum criterion is a criterion regarding the transmission efficiency to be expected when using the energy signal.
Further describing the previous system, the performance metric that the transmission parameter is optimized for is the expected efficiency of the power transfer. The system tries to maximize the amount of power delivered to the receiver for a given amount of transmitted power.
7. The determining device according to claim 1 , wherein the authorization is carried out based on an authorization message sent out by the receiving apparatus to the authorization checking device.
Building upon the previous wireless power transmission system, the authorization check is based on an authorization message sent from the receiver to the system's authorization component. The receiver essentially requests permission to receive power.
8. The determining device according to claim 1 , wherein the parameter determining device is located within the sending device.
In the previously detailed wireless power transmission system, the component that calculates the transmission parameter is located within the transmitting device itself.
9. The determining device according to claim 1 , wherein the parameter determining device is located within the receiving apparatus.
Alternatively, in the wireless power transmission system, the component that calculates the transmission parameter is located within the receiving device.
10. The determining device according to claim 1 , wherein the receiving apparatus is a mobile electronic device.
In the described wireless power transmission system, the receiving device is a mobile electronic device, such as a smartphone or tablet.
11. The determining device according to claim 1 , wherein the determining device is configured to determine the transmission parameter if the ratio of the amount of energy radiated from the sending device to the amount of energy supplied to the receiving apparatus via the radiated energy lies above a predetermined threshold value.
In the described wireless power transmission system, the system determines a transmission parameter for power transfer only if the amount of energy arriving at the receiver is above a threshold compared to the total energy transmitted. If the efficiency is too low, the system won't attempt to optimize transmission.
12. An energy supply device, comprising: a determining device for determining a transmission parameter of a wireless energy transmission from a sending device to a receiving apparatus, the determining device comprising: an authorization checking device which is configured to carry out an authorization in order to determine whether the receiving apparatus is authorized to receive energy from the sending device; a sending/receiving apparatus which is configured to send and receive messages during a message exchange with the receiving apparatus in order to determine the transmission parameter; and a parameter determining device which is configured to determine the transmission parameter based on the authorization and based on the message exchange, if the receiving apparatus is authorized to receive energy from the sending device, wherein based on the transmission of a test message between the receiving apparatus and the sending device, pulse responses of the transmission channels between the sending device and the receiving apparatus are determined.
This describes a power supply that incorporates the wireless power transmission system described previously. The power supply includes an authorization component, a message exchange component, and a parameter determining component. It authorizes the receiver, exchanges messages to determine transmission parameters, and calculates the parameters based on authorization and message exchange, using channel pulse responses obtained from a test signal.
13. A method for determining a transmission parameter of a wireless energy transmission from a sending device to a receiving apparatus, the method comprising: carrying out an authorization in order to determine whether the receiving apparatus is authorized to receive energy from the sending device; sending and receiving of messages during a message exchange with the receiving apparatus in order to determine the transmission parameter; and determining of the transmission parameter based on the authorization and based on the message exchange if the receiving apparatus is authorized to receive energy from the sending device, wherein based on the transmission of a test message between the receiving apparatus and the sending device, pulse responses of the transmission channels between the sending device and the receiving apparatus are determined.
A method for wirelessly transmitting power involves verifying that the receiver is authorized to receive power from the transmitter. The method includes exchanging messages between the transmitter and receiver to determine ideal transmission parameters. If authorized, the transmission parameters are calculated based on authorization status and the message exchange. A test signal is sent to measure pulse responses of wireless channels between the devices to understand the channel characteristics, enabling parameter optimization.
14. An energy transmitting device for wirelessly transmitting energy to a receiving apparatus, the energy transmitting device comprising: a sending device configured to radiate energy by means of energy sending signals; a receiving device configured to receive a message from the receiving apparatus, from which the amount of energy which has been supplied to the receiving apparatus using the radiated energy can be determined; a comparing device being configured to compare the amount of radiated energy with the amount of energy supplied to the receiving apparatus; a controlling device being configured to control the sending device to radiate energy by means of other energy sending signals optimized for the energy transmission from the sending device to the receiving apparatus in accordance with estimated pulse responses of the transmission channels between the energy transmitting device and the receiving apparatus if the ratio of the amount of energy supplied to the receiving apparatus and the amount of radiated energy is below a predetermined threshold.
A power transmitter wirelessly sends energy to a receiver. It gets feedback from the receiver about how much energy was actually received. It compares the transmitted energy with the received energy. If the ratio of received to transmitted energy is too low, it adjusts the transmission to optimize the power transfer, using estimated pulse responses of wireless channels between the devices. This optimization is done using different energy sending signals.
15. The energy transmitting device according to claim 14 , wherein the comparison device is configured to determine the ratio of the amount of energy radiated by the sending device to the amount of energy provided to the receiving apparatus using the radiated energy.
Further to the above power transmitter, the comparison component specifically calculates the *ratio* of transmitted energy to received energy. This ratio is used to assess the efficiency of the wireless power transfer.
16. The energy transmitting device according to claim 15 , wherein the controlling device is configured to control a determining device in order to determine a transmission parameter for transmitting the energy if the ratio of the amount of the energy radiated by the sending device to the amount of energy provided to the receiving apparatus via the radiated energy lies above a predetermined threshold value.
Expanding on the wireless power transmitter, if the ratio of received to transmitted energy is *above* a pre-set threshold, the system invokes a component for determining the transmission parameters. This suggests that the system only actively optimizes when performance is already reasonably good.
17. The energy transmitting device according to claim 16 , wherein the controlling device is configured to interrupt the radiation of energy to the receiving apparatus if no transmission parameters can be determined based on which a lower ratio of the amount of energy radiated by the sending device to the amount of energy provided to the receiving apparatus via the radiated energy as the determined ratio is to be expected.
In the wireless power transmitter, if the system *cannot* find transmission parameters that would improve the energy transfer ratio, it will stop transmitting power to the receiver entirely. This prevents wasting energy on a poor connection.
18. The energy transmitting device according to claim 17 , wherein the controlling device is configured to control the determining device at a later point of time in order to determine a transmission parameter for transmission of energy, if the radiation of energy is interrupted.
Further describing the power transmitter, after stopping power transfer due to a poor connection, the system will periodically try again later to find suitable transmission parameters and resume charging.
19. The energy transmitting device according to claim 14 , wherein the receiving apparatus is a mobile electronic apparatus.
In the previously described wireless power transmitter, the receiving device is a mobile electronic device.
20. A method for wirelessly transmitting energy from a sending device to a receiving apparatus, the method comprising: receiving a message from the receiving apparatus, from which the amount of energy which is supplied to the receiving apparatus via energy radiated by means of energy signals can be determined; comparing the amount of radiated energy with the amount of energy supplied to the receiving apparatus; and controlling the sending device to radiate energy by means of other energy sending signals optimized for the energy transmission from the sending device to the receiving apparatus in accordance with estimated pulse responses of the transmission channels between the energy transmitting device and the receiving apparatus if the ratio of the amount of energy supplied to the receiving apparatus and the amount of radiated energy is below a predetermined threshold.
A method for wirelessly transmitting power starts with receiving information from the receiving device about how much energy it received. Then, it compares the transmitted energy with the received energy. If the received energy is low compared to the transmitted energy, the transmitter adjusts the way it sends power, using different energy sending signals, by estimating pulse responses of wireless channels between the devices to improve the transfer efficiency.
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December 16, 2014
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